TECHNICAL PAPERS: Gas Turbines: Advanced Energy Systems

Thermodynamic Optimization of the HAT Cycle Plant Structure—Part I: Optimization of the “Basic Plant Configuration”

[+] Author and Article Information
A. Lazzaretto, F. Segato

Department of Mechanical Engineering, University of Padova, via Venezia 1, 35131 Padova, Italy

J. Eng. Gas Turbines Power 123(1), 1-7 (Jan 23, 2000) (7 pages) doi:10.1115/1.1338999 History: Received June 29, 1999; Revised January 23, 2000
Copyright © 2001 by ASME
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One of the HAT cycle plant configuration proposed in the literature. The “basic components” and the heat transfer section are included within dotted lines. The “basic configuration” of the HAT cycle proposed here.
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Flow chart of one of the steps of the optimization procedure of the basic plant configuration (η and P represent the total plant efficiency and specific power, respectively)
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Black-box with hot streams (LPA—low pressure air in the intercooler, HPA—high pressure air in the aftercooler EXG—exhaust gases in the economizer) and cold streams (MUW—make-up water, RW—recuperated water at the bottom of the saturator, SW—water sent to the saturator, FUEL)
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Flow-chart of the Fortran routine used to determine the optimal value of the temperature at the saturator inlet (Tw)
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Composite curves in the black-box. In each segment heat can be exchanged using various combinations of the hot and cold streams shown in Fig. 3
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Composite curves for Tac=150°C and Tac=180°C (above the optimum)
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Composite curves for Tac=60°C and Tac=30°C (below the optimum)




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